The emergence in the late 1930s. in service with the Navy in the latest heavy ships with catapults on board and demanded the new aircraft to them. Origin ship reconnaissance aircraft construction CDF-1 MS CDB GM. Berievo, adapted according to the scheme of a biplane with a central float, I had a lot of resistance and possessed a good seaworthiness. Therefore, at the design stage GM. Beriev decided to abandon the biplane and execute KOR-2 as a flying boat monoplane. The construction of the aircraft began to GM. Beriev paramount.
Because of, how successful will the new aircraft, directly depended on the fate of the KB. This is explained by the fact, that in the Air Force Office noted a noticeable lag domestic seaplane modern requirements.
In February 1939 g. by the decision of the People's Commissariats aviation industry and the Navy design and construction of the CDF-2 assigned to GM. Berievu. What did it cost him to "break" this order (his project lost CB IV. Chetverikova) and avoid closing the CB with all its consequences. Draft project was developed in two versions - in the pits and float. Meanwhile, the military in the project, a number of claims. The Marine Aviation Administration was sent a memo about, that the construction of the CDF-2 (Was-4) It does not meet the required specification in size and flight data. But, in spite of difficulties, Work continued on the plane. From receipt of technical requirements for the aircraft to its construction took 14 months.
In October 1940 g. first BCD-2 (Was-4) I was ready for testing on the Azov Sea. CDF-2 was a boat metal monoplane braced with the upper wing and empennage normal. Motor M-63 with the pull screw fastened to the pylon and the sub pame. To reduce the size of the wing could be folded. The crew consisted of two people: pilot in the pilot's cockpit closed, and the navigator in his. aircraft armament - two machine guns ShKAS: one on a fixed installation in the bow of the boat, and the second - on the turret in the rear cockpit.
21 October test pilot NP. Kotyakov made its first flight. To test the built two machines. After the factory test aircraft was transferred to the state tests, who conducted the test pilot SB. Radelet. The Act referred to state tests, plane that corresponds to performance data and satisfies the requirements of the Navy. true, It was marked by a number of shortcomings of the aircraft armament, which was required to eliminate the production machines.
Serial production of the CDF-2 (Was-4) It has been adjusted at the factory in g. Kimry Moscow region. Experts Bureau, headed by GM. Beriev moved there in March 1941 g. Unfortunately, The war and the evacuation of Omsk KB in the factory number 288 not allowed to gather in Kimry single flying prototype aircraft. Final completion of state tests was restrained by lack of catapults, which was built at the Leningrad plant. The finished catapult installed on a large floating barge, equipped with a crane for lifting the aircraft on the trolley. After the control of discharges from cargo catapult, respective aircraft weight, Start KOR-2 was prepared. The first take-off from a catapult made at the end of July 1941 g. S.B. Radelet. Series production aircraft, received designation Be-4, It continued at two factories in Omsk and Krasnoyarsk, which it was built around 50 machines. Due to the small number of aircraft built they are little used in the Great Patriotic War.
Performance characteristics of Be-4
– chief designer: D. M. Berievo
– First flight: 21 October 1940 of the year
– Getting Started: autumn 1941 of the year
– End of operation: 1947 year
– units produced: 44
The crew of the Be-4
– 2 people
Dimensions Be-4
– Length: 10,5 m
– Wingspan: 12,0 m
– wing area: 25,5 m²
All Be-4
– empty weight: 2082 kg
– Curb weight: 2397 kg
– Maximum takeoff weight: 2760 kg
Be-4 Engine
– 1 × M-62
– engine power: 1 × 850 l. from.
Speed Be-4
– full speed: 356 kmh
The flight range of the Be-4
– 550-1150 km
Be-4 Practical ceiling
– 8100 m
Armament Be-4
– Small-pushechnoe: 2 x ShKAS
– point of suspension: 4
– bombs: 4 FAB-100 h (overloads)
Photo-4 was
Scout Ship Be-4 (WORK-2) cruiser “Molotov”, 1946 year.
